Pulley.



Patented May 1e, 1905.

PATENT OFFICE.

OTTO WOLD, OF VALLEY CITY, NORTH DAKOTA.

PULLEY.

SPECIFICATION forming part of Letters Patent No. 790,094, dated. May 16,1905.

Application filed December 3], 1904. Serial No. 239,192.

'o @ZZ whom/ it nea/y concern:

Be it known that I, OTTo WoLD, a citizen of the United States, residingat Valley City, in the county of Barnes, State of North Dakota, haveinvented certain new and useful Improvements in Pulleys; and I do herebydeclare the following to be a full, clear,- and exact description of theinvention, such as will enable others skilled the art to which itappertains to make and use the same.

This invention relates to pulley-wheels or belt-pulleys; and it has forits object to provide an article of this nature wherein the belt will beheld positively against slipping and in which the members forming thewearingface of the pulley will be held positively against turning ontheir hub and wherein, furthermore, worn parts may be easily and quicklyremoved and newVV parts substituted therefor.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is an end elevation showing a pulley-wheel embodying thepresent invention. Fig. 2 is a central longitudinal section through thepulley. Fig. 3 is a transverseY section through the pulley.

Referring now to the drawings, the present pulley comprises a centralcore or hub 10, which is square in cross-section and centrally andlongitudinally of which is a cylindrical bore 11, in the face of whichis a longitudinal groove 12 to receive the ordinary spline or key tosecure a hub to the shaft. At one end of'the hub is a circumscriloingflange 13, through which are formed perforations 14, and fitted upon theopposite end of the hub is a disk-shaped plate 15, having a centralrectangular opening 16, in which the end of the hub is snugly received,this plate having perforations 17 therein arranged to register withthose of the flange. Upon the hub are v`disposed leather disks 19, whichhave central 'rectangular openings 20 to snugly receive the hub, andthrough these disks are formed perforations 21, which register,respectively, with the perforations of the iiange and plate, so thatclamping-bolts 22 may be engaged through them, the bolts having nuts 23engaged thereon, so that the plate may be drawn along the hub to clampthe leather disks between it and the flange. The central leather disk isthe one of greatest diameter, and the disks at each side thereofgradually decrease in diameter toward the ends of the hub, so that theface of the pulley is curved outwardly from end to end.

Itis found in practice that in the use of leather slipping of the beltis entirely prevented, while the particular structure shown permits ofreadyremoval of the leather members for substitution or repair.

What is claimed is- A belt-pulley comprising a cross-sectional angularhub, having an integral circumscribing flange at one end provided withperforations, a plurality of leather disks having each a cross-sectionalangular central opening in .which the hub is fitted, a metal platehaving a central rectangular-shaped opening in which the hub is fitted,the disks lying between said plate and flange, said disks and platehaving perforations therethrough registering with those of the iiangeand clamping-bolts engaged through the perforations and provided withnuts, the leather'disks in the middle being of greater diameter than thedisks at the ends of the hub.

, In testimony whereof I aifiX my signature in presence of twowitnesses.

oTTo woLn.`

Witnesses:

H. A. OLsBERG,

WM. SPANGENBERG.

sor

